bulk flow—pressure difference plant physiology uni 2009
TRANSCRIPT
Bulk flow—Pressure difference
Plant Physiology
UNI 2009
Pressure difference
Pipe #1
Pressure = +1 bars
Liquids: both positive pressure
Valve(closed)
X
Pipe #2
Pressure = +3 bars
What happens when we open valve?
Pressure difference
Pipe #1
Pressure = +1 bars
Valve(open)
Pipe #2
Pressure = +3 bars
Bulk Flow from higher to lower pressure
Pressure difference = ?
( )
Liquids: both positive pressure
Pressure difference
Pipe #1
Pressure = -2 bars
Valve(closed)
X
Pipe #2
Pressure = -5 bars
What happens when we open valve?
Liquids: both negative pressure
Pressure difference
Pipe #1
Pressure = -2 bars
Liquids
Valve(open)
Pipe #2
Pressure = -5 bars
( )
Bulk Flow from higher to lower pressure
Pressure difference = ?
Pressure difference
Pipe #1
Pressure = +1 bars
Valve(closed)
X
Pipe #2
Pressure = -4 bars
What happens when we open valve?
Liquids: one negative pressureone positive pressure
Pressure difference
Pipe #1
Pressure = +1 bars
Valve(open)
Pipe #2
Pressure = -4 bars
( )
Liquids: one negative pressureone positive pressure
Bulk Flow from higher to lower pressure
Pressure difference = ?